InChI=1S/C20H28O7/c1-5-10(2)18(23)26-15-8-20(4)16(27-20)7-13(22)12(9-21)6-14-17(15)11(3)19(24)25-14/h5,12-17,21-22H,3,6-9H2,1-2,4H3/b10-5-/t12-,13-,14+,15+,16+,17-,20-/m0/s1